CA3144797A1 - Procede permettant de calculer la position d'un echantillon de reference de matrice d'entiers pour un calcul de gradient d'echantillon de limite de niveau de bloc dans le calcul d e flux optique bi-predictif et la correction bi-predictive - Google Patents

Procede permettant de calculer la position d'un echantillon de reference de matrice d'entiers pour un calcul de gradient d'echantillon de limite de niveau de bloc dans le calcul d e flux optique bi-predictif et la correction bi-predictive Download PDF

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Publication number
CA3144797A1
CA3144797A1 CA3144797A CA3144797A CA3144797A1 CA 3144797 A1 CA3144797 A1 CA 3144797A1 CA 3144797 A CA3144797 A CA 3144797A CA 3144797 A CA3144797 A CA 3144797A CA 3144797 A1 CA3144797 A1 CA 3144797A1
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sample position
pixel sample
sub
integer pixel
prediction
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Sriram Sethuraman
Jeeva Raj A
Sagar KOTECHA
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H04N19/517—Processing of motion vectors by encoding
    • H04N19/52—Processing of motion vectors by encoding by predictive encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H04N19/521—Processing of motion vectors for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting motion vectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/537—Motion estimation other than block-based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/109—Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Il est décrit un procédé de prédiction de flux optique bidirectionnel basé sur des valeurs d'échantillon de référence à partir de positions d'échantillon appartenant à une région étendue d'un bloc prédit utilisé dans la prédiction de flux optique bidirectionnel d'un bloc courant, des positions de sous-pixel dans la région étendue du bloc prédit dans l'image de référence étant arrondies afin d'obtenir des positions d'échantillon de pixel d'entier dans l'image de référence, les valeurs d'échantillon de référence aux positions d'échantillon de pixel d'entier obtenu dans l'image de référence étant utilisées dans le calcul de gradients d'échantillon de limite correspondant aux limites du bloc prédit dans l'image de référence.
CA3144797A 2019-06-24 2020-06-23 Procede permettant de calculer la position d'un echantillon de reference de matrice d'entiers pour un calcul de gradient d'echantillon de limite de niveau de bloc dans le calcul d e flux optique bi-predictif et la correction bi-predictive Pending CA3144797A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IN201931025013 2019-06-24
IN201931025013 2019-06-24
PCT/CN2020/097762 WO2020259507A1 (fr) 2019-06-24 2020-06-23 Procédé permettant de calculer la position d'un échantillon de référence de matrice d'entiers pour un calcul de gradient d'échantillon de limite de niveau de bloc dans le calcul de flux optique bi-prédictif et la correction bi-prédictive

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CA3144797A1 true CA3144797A1 (fr) 2020-12-30

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US (2) US12184862B2 (fr)
EP (2) EP4601288A3 (fr)
JP (2) JP7384939B2 (fr)
KR (3) KR20250065738A (fr)
CN (2) CN114009041A (fr)
AU (1) AU2020308351B2 (fr)
BR (1) BR112021026327A2 (fr)
CA (1) CA3144797A1 (fr)
ES (1) ES3031392T3 (fr)
HU (1) HUE071034T2 (fr)
MX (1) MX2022000141A (fr)
PL (1) PL3981156T3 (fr)
PT (1) PT3981156T (fr)
WO (1) WO2020259507A1 (fr)

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CN121531141A (zh) 2026-02-13
KR102660120B1 (ko) 2024-04-22
PL3981156T3 (pl) 2025-06-16
JP7384939B2 (ja) 2023-11-21
HUE071034T2 (hu) 2025-07-28
AU2020308351A1 (en) 2022-02-03
KR102806124B1 (ko) 2025-05-09
CN114009041A (zh) 2022-02-01
BR112021026327A2 (pt) 2022-03-03
WO2020259507A1 (fr) 2020-12-30
AU2020308351B2 (en) 2026-01-08
EP3981156A4 (fr) 2023-02-01
EP3981156A1 (fr) 2022-04-13
KR20240056654A (ko) 2024-04-30
MX2022000141A (es) 2022-04-27
WO2020259507A8 (fr) 2021-02-25
JP7640647B2 (ja) 2025-03-05
EP4601288A3 (fr) 2025-11-12
US20250088637A1 (en) 2025-03-13
PT3981156T (pt) 2025-06-16
EP3981156B1 (fr) 2025-03-26
JP2022540771A (ja) 2022-09-20
US20220116624A1 (en) 2022-04-14
JP2024009038A (ja) 2024-01-19
US12184862B2 (en) 2024-12-31
KR20220024877A (ko) 2022-03-03
EP4601288A2 (fr) 2025-08-13
KR20250065738A (ko) 2025-05-13
ES3031392T3 (en) 2025-07-08

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